From 64797c2c8a9cb6fe3f19c8b1fbb4dcfc2a71d163 Mon Sep 17 00:00:00 2001
From: Brandon Rodriguez <brodriguez8774@gmail.com>
Date: Sat, 10 Oct 2020 04:49:01 -0400
Subject: [PATCH] Create string "to upper/lower" functions
---
documents/references.md | 16 +++++++-----
utils.sh | 58 +++++++++++++++++++++++++++++++++++++++++
2 files changed, 68 insertions(+), 6 deletions(-)
diff --git a/documents/references.md b/documents/references.md
index 6f1f22d..bc9c881 100644
--- a/documents/references.md
+++ b/documents/references.md
@@ -5,8 +5,7 @@
Various references used in project.
-## General Bash References
-
+## General Syntax References
### Shebang Line
<https://linuxize.com/post/bash-shebang/>
@@ -18,6 +17,7 @@ Various references used in project.
### Functions
<https://tldp.org/HOWTO/Bash-Prog-Intro-HOWTO-8.html>
+<https://www.linuxjournal.com/content/return-values-bash-functions>
### Arrays
<https://opensource.com/article/18/5/you-dont-know-bash-intro-bash-arrays>
@@ -33,11 +33,15 @@ Various references used in project.
### Check Number of Passed Args
<https://stackoverflow.com/a/6482403>
-### Change Output Color
-<https://stackoverflow.com/a/5947802>
-
### Get User's name
<https://stackoverflow.com/a/19306837>
-### String Manipulation
+### Text Manipulation
+#### Change Output Color
+<https://stackoverflow.com/a/5947802>
+
+#### String Upper/Lower Case
+<https://stackoverflow.com/a/2264537>
+
+#### String Trimming Manipulation
<https://stackoverflow.com/a/14703709>
diff --git a/utils.sh b/utils.sh
index 3da34e9..5dd16f7 100755
--- a/utils.sh
+++ b/utils.sh
@@ -21,9 +21,14 @@ text_cyan="\033[1;36m"
text_yellow="\033[1;33m"
text_white="\033[1;37m"
+# Function Return.
+return_value=""
+
#endregion Global Utility Variables
+#region User Check Functions
+
###
# Function to check if current username matches passed value.
# In particular, is used to check if user is sudo/root user.
@@ -84,6 +89,59 @@ function check_is_not_user () {
fi
}
+#endregion User Check Functions
+
+
+#region Text Manipulation Functions
+
+###
+ # Converts one or more passed args to uppercase characters.
+ ##
+function to_upper () {
+
+ # Check number of passed function args.
+ if [[ $# > 0 ]]
+ then
+ # At least one arg passed. Loop through each one.
+ return_value=()
+ for arg in $@
+ do
+ return_value+=( $(echo "${arg}" | tr '[:lower:]' '[:upper:]') )
+ done
+
+ # No args passed.
+ else
+ echo -e "${text_red}Too few args passed. Expected one arg of username to check against.${text_reset}"
+ exit 1
+ fi
+}
+
+
+###
+ # Convers one or more passed args to lowercase characters.
+ ##
+function to_lower () {
+
+ # Check number of passed function args.
+ if [[ $# > 0 ]]
+ then
+ # At least one arg passed. Loop through each one.
+ return_value=()
+ for arg in ${@}
+ do
+ return_value+=( $(echo "${arg}" | tr '[:upper:]' '[:lower:]') )
+ done
+
+
+ # No args passed.
+ else
+ echo -e "${text_red}Too few args passed. Expected one arg of username to check against.${text_reset}"
+ exit 1
+ fi
+}
+
+#endregion Text Manipulation Functions
+
###
# Function to print out all available text colors provided by this script.
--
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